/*
 * Copyright (c) Huawei Technologies Co., Ltd. 2025. All rights reserved.
 * You can use this software according to the terms and conditions of the Mulan PSL v2.
 * You may obtain a copy of Mulan PSL v2 at:
 *          http://license.coscl.org.cn/MulanPSL2
 * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
 * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
 * MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
 * See the Mulan PSL v2 for more details.
 */

#include "InflightDataRescalingDescriptor.h"

namespace omnistream {
    InflightDataRescalingDescriptor InflightDataRescalingDescriptor::noRescale = NoRescalingDescriptor();

    bool InflightDataGateOrPartitionRescalingDescriptor::operator==(
        const InflightDataGateOrPartitionRescalingDescriptor &o) const
    {
        if (this == &o) {
            return true;
        }
        const InflightDataGateOrPartitionRescalingDescriptor &that = o;
        return oldSubtaskIndexes == that.oldSubtaskIndexes &&
               rescaledChannelsMappings == that.rescaledChannelsMappings &&
               ambiguousSubtaskIndexes == that.ambiguousSubtaskIndexes &&
               mappingType == that.mappingType;
    }

    std::size_t InflightDataGateOrPartitionRescalingDescriptor::HashCode() const
    {
        // This is not used
        return 0;
    }

    std::string InflightDataGateOrPartitionRescalingDescriptor::ToString() const
    {
        std::ostringstream oss;
        oss << "InflightDataGateOrPartitionRescalingDescriptor{";
        oss << "oldSubtaskIndexes=[";

        // Equivalent to Arrays.toString(oldSubtaskIndexes)
        for (size_t i = 0; i < oldSubtaskIndexes.size(); ++i) {
            if (i > 0) {
                oss << ", ";
            }
            oss << oldSubtaskIndexes[i];
        }
        oss << "]";
        oss << ", rescaledChannelsMappings=" << rescaledChannelsMappings.ToString();
        oss << ", ambiguousSubtaskIndexes={";
        bool first = true;
        for (const auto &index: ambiguousSubtaskIndexes) {
            if (!first) {
                oss << ", ";
            }
            oss << index;
            first = false;
        }
        oss << "}";

        oss << ", mappingType=";
        switch (mappingType) {
            case MappingType::IDENTITY:
                oss << "IDENTITY";
                break;
            case MappingType::RESCALING:
                oss << "RESCALING";
                break;
        }
        oss << "}";
        return oss.str();
    }
}